wilmington, ma | 2016 annual report | npdes phase ii small

MAY O 1 2016 MunicipalityOrganization Town of Wilmington

EPA NPDES Permit Number MA04123

MaDEP Transmittal Number X228080

Annual Report Number amp Reporting Period No 12 March 15~March 16

NPDES PII Small MS4 General Permit Annual Report

PART I GENERAL INFORMATION

Contact Person Michael J Woods Title Director ofPublic Works

Telephone 9786584481 Email mwoodswilmingtonmagov

Certification

I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information the information submitted is to the best ofmy knowledge and belief true accurate and complete I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations

Signature d1fi)J2

Printed Name Michael J Woods

Title Director of Public Works

Date

PART II SELF-ASSESSMENT

The Town of Wilmington has completed the required self assessment and has determined that we are in compliance with all this years permit conditions with the exception ofsome areas which will require greater emphasis during next years permit period

Part 2-2 Due to budgetary constraints the Town has not been able to fund two (2) Household Hazardous Waste Collection Days The Town has held one (1 ) Hazardous Waste Day during the reporting period As a compromise the Town has reviewed alternatives and offers a relatively extensive recycling program Mercury devices are collected 5 days a week year round while white goods and Cathode Ray Tubes (CRTs) are collected by a private recycle company once a week The DPW accepts waste oil from Wilmington Residents year round Monday through Friday The Towns solid waste hauler Northside Carting also operates a small hazardous waste facility and has offered use to Wilmington residents at a discount rate This facility operates year row1d and accepts common hazardous waste items such as oil based paints fluorescent bulbs auto I boat batteries propane tanks and miscellaneous electronic equipment

Part 3-(1-3) Nearly 100 of the Town s MS4 has been mapped and hand superimposed onto the Towns topographic map system (including pipe materials sizes and flow direction) During the overall permit period the Town has procured the services of SEA Consultants through an advertised procurement process to develop a complete Drainage System Master Plan which included the GPS mapping of the Towns drainage system The majority ofthe Towns drainage outfalls were located during the development ofthe Drainage System Master Plan as part ofoutfall assessments which included water quality testing of outfall discharges Although high and medium suspicion flows have been sampled and analyzed low suspicion dry weather flows have not yet been analyzed due to testing budget constraints personnel constraints and poor accessibility (it shall be noted that low suspicion outfalls were identified as outfalls that were blocked or inaccessible and therefore flagged for follow-up) To enhance the towns ability to maintain its drainage system and assist DPW field operations the towns existing GIS and field data was migrated into an on line mapping system Previously the town employed a desktop mapping solution that had been in use since the initial GPS locating and inspection of drainage features in 2007 This on-line system allows field crews to quickly identify drainage structures views detailed cleaning histories and record any cleaning or maintenance performed at that time The on-line system includes PeopleForms which standardized an inspection form for catch basin cleaning These forms include line items for illicit discharge detection and allow operations managers the ability to track cleaning crews identify areas of greatest need of maintenance and monitor connectivity and flow throughout the system Additional programs that are not listed as requirements in our Stormwater Management Pernut have been active this past reporting year Crews from the Massachusetts Mosquito Control Project continue to perform outfall cleaning and maintenance (plus removal of vegetative debris and trash) to reduce the amounts of standing water thus improving water quality Public outreach and education has also continued this repmting year As reported last year the Towns Community Development Technical Review Tean1 held a meeting that focused on potential improvements to the Towns Stormwater Management Bylaw The meeting promoted a collaborative effort between Town Officials and local developers to review potential modifications while maintaining the spirit of the bylaw These changes have been included as an article on the warrant for this years Annual Town Meeting (April 30 2016) As mentioned in previous reports in November of 20 13 Selectmen voted to join a stormwater collaborative via the Northern Mddlesex Council of Governments (NMCOG) Town staff and managers have been active participants in the training programs offered through the collaborative including Illicit Discharge Detection and Elimination public service announcements and review ofthe draft EPA Massachusetts Small MS4 General Permit

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PART III SUMMARY OF MINIMUM CONTROL MEASURES 1 Public Education and Outreach BMP BMP Description Responsible ID DeptPerson 1-1 Educational Material DPW

Measurable Goal(s)

Measurable goals for this BMP will be

I) procurement development or modification of four brochures or fact sheets that include stonnwater information and

2) posting of stonnwater information on the Towns web site Dur ing Years 2 through 5 distribute one ofthe brochures or fact sheets annually to property owners based on Assessors records and update the web site semishyannually

Progress on Goal(s) Permit Year 13 The DPW has again made this years recycling brochure available for download on the DPW website

The Town ofWilmington Department of Public Works has continued to update the DPW website with stormwater and recycling related information Separate links on the website have been dedicated to Phase II stom1water infonnation illicit discharge education and reporting procedures and recycling scheduling and FAQs The website can be viewed at httpwwwwilmingtonmagov

The website contains electronic copies ofthe Jllicit Discharge Bylaw and Stormwater Bylaw along with specifics on each program

April 30 2015 - DPW management attends public presentation at library entitled middotmiddotWelcome to Wilmington Reception for new residents Publicity on stonnwater management and new automated trash program Stormwater handouts from Silver Lake LID project were handed out including tips on achieving cleaner stonnwater picking up after your pet low impact landscaping techniques reduction of fertilizers etc Copies of Wilmington Stormwater Management NPDES website and illicit discharge website were also handed out at the event

Planned Activities Permit Year 14 Continue to develop and distribute stormwater informational brochures

Continue to publish articles in middotTown Topics including reminders about what an illicit d ischarge consists ofby supplying the definition of illicit and non-illicit discharges and giving examples of them

Continue to update the Department ofPublic Works web page with stormwater-related information and modifyadd FAQs

Continue to distribute the recycling informational brochure to Wilmington residents and responding to hotline inquiries

Work with NMCOGs stonnwater collaborative to develop new educational materials

Post the Public Service Announcementbull created by NM COG - this announcement educates the general public on various stormwater pollution prevention techniques and good housekeeping measures

bullnote In March 2016 a 2 minute PSA on water quality and pollution prevention was distributed to WCTV This can be seen after every program on WCTV

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2 Public I - t - and -- Particioaf - -middot

BMP ID

BMP Description

Responsible DeotPerson

Measurable Goal(s) Progress on Goal(s)shyPermit Year 12

Planned Activities -Permit Year 13

2-1 Storm water Task Force

DPW The individuals who will serve on this task force will be identified within the first two months of the permitting period On a yearly basis this task force will hold meetings every four months will be responsible for the development of material and will keep track ofthe status of the control measures and record keeping associated with programs being developed

The Towns Community Development Technical Review Team meets monthly and has been reviewing Stormwater Permits and Simple Stomwater Permits as now required by the Towns Stormwater Bylaw for projects which trip the development thresholds Mermbers of this team include the Director ofPlanning and Conservation the Assistant Director of Planning and Conservation the Engineering Director the Director of Public Works the DPW Operations Manager the Building lnspector and representatives from Wilmington Public Safety

The Towns Community Development Technical Review Team held a meeting that focused on potential improvements to the Towns Stormwater Management Bylaw The meeting promoted a collaborative effort between Town Officials and local developers to review potential modifications while maintaining the spirit ofthe bylaw

Members of the Planning and Conservation Commission the Engineering Divisiont and the Department ofPublic Works will continue to meet to implement the Towns Stormwater Bylaw as part of the Community Development Technical Review Committee

Town Officials plan performed a thorough review of the Stormwater Bylaw and improvements to the bylaw are planned to take effect on May 1 2016 (subject to Town Meeting vote on April 30 2016)

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2 Public Involvement and Participation (Continued)

BMP ID BMP Responsible Measurable Goal(s) Progress on Goal(s) - Planned Activities Description DeptPerson Permit Year 12 Permit Year 13

2-2 Promote DPWBoH The Town will hold a Due to budgetary constraints the Town The Town will continue to hold Public household hazardous waste day has not been able to fund two (2) household hazardous waste days and

Programs two times per year and will Household Hazardous Waste support citizen group clean-up efforts

support community clean-up Collection Days The Town has held

days by providing clean-up one (I) Hazardous Waste Day during Also the DPW will continue to

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materials and will pick up and dispose ofthe waste collected

the reporting period As a compromise the Town has reviewed alternatives and offers a relatively

investigate the possibility of sharing hazardous waste days w ith surroundingcommunities facilities to maximize

extensive recycling program Mercury opportunities for area residents as the devices are collected 5 days a week Town of Lexington has shared their year-year round while white goods and round collection facility with Town of Cathode Ray Tubes (CRTs) are Wilmington residents at a low cost to the collected by a private recycle company resident once a week The OPW accepts waste oil from Wilmington Residents year The Town continues to use the Town round Monday through Friday The website and the Town Topicmiddot newsletter Town s solid waste hauler Northside to provide education and promote public Carting also operates a small programs hazardous waste facility and has offered use ro Wilmington residents at Additionally the local newspaper the a discount rate This facility operates Town Crier will be used to adve1iise year round and accepts common Hazardous Waste Days hazardous waste items such as oil based paints nuorescent bulbs auto The Public Buildings Department will boat batteries propane tanks and continue to collect fluorescent bulbs from miscellaneous electronic equipment residents Monday through Friday

The Towns yard waste collection and The Town has supported community drop off will continue to operate clean-up programs for local volunteer groups to perform stream and roadway clean-up and has provided materials and safety equipment at the expense of

The town has transitioned to controlled trash tonnage toters which is planned to increase the recycle rate by 15 to 20

the Town organized by the Office of Planning and Conservation

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3 Illicit Disch D d Elim-------shy BMP ID

BMPDescription

Responsible DeptPerson Name

Measurable Goal(s) Progress on Goal(s) shyPermit Year 12

Planned Activities shyPermit Year 13

3-1

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Map Stormwater Assets

DPW Using GPS the exact locations will be identified for outfalls All infonnation from field investigations will be attached to the database During the first two years of this pennit this mapping will be updated on a quarterly basis to integrate all information into the database system from investigations Following the first two years this schedule will be revised based on the amount ofdata to be added however at a minimum the database will be updated every six months A Goal ofcompleting mapping of 50 percent of surface water outfalls major stormwater drainage structures and receiving surface water bodies by the end of Year 5

Approximately 100 of the Wilmington drain system including catch basins manholes and outfalls have been mapped and superimposed onto the Towns topographic map system Pipe sizes and materials direction of flow and estimated age ofthe subsystem have also been included in the mapping The Town drain system map can be viewed upon request at the Department ofPublic Works

As part of the Drainage System Master Plan the Town has developed GIS mapping ofthe systems drainage structures and provided the Town with a more versatile electronic version ofthe stonn drain system

Ongoing incorporation ofconditional assessment infonnation into the Towns geodatabase

The Wilmington Engineering Division is planning to continue their internship program

The Wilmington Engineering Division will continue to expand on PeopleForm capabilities for reporting and record keeping

map

The Town recently launched PeopleForms which standardized an inspection fonn for catch basin cleaning These fonns include line items for illicit discharge detection and allow operations managers the ability to track cleaning crews identify areas ofgreatest need of maintenance and monitor connectivity

and flow throughout the system

May 4 2015 - An Illicit Discharge Detection and Elimination GIS based People Form was created to help track suspected illicit discharge

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BMP BMP Responsible Measurable Goal(s) Progress on Goal(s) Planned Activities ID Description DeptPerson Permit Year 12 Permit Year 13

Name 3-2 Detection DPWBoh The goal is to identify a plan for S E A Consultants and its The Town will continue to

and completing dry weather sampl ing subcontractors completed the investigate the potential DWF in Elimination during the first year of the permit mapping and illicit discharge upstream manholes in order to trace Program tenn Subsequent years will include detection and elimination program in the illicit discharges to the sources

completing dry weather springsummer of Permit Year 4 All Additional sampling as outlined in investigations ofall outfalls along known and accessible outfalls were the Drainage System Master Plan the Ipswich River and Maple inspected which revealed 63 potential will be conducted

- middot--- Meadow Brook and 50 ofoutfalls dry weather flows (DWF) ofwhich 3 along other waterways are highly suspected to be an illic it Low suspicion DWF will be sampled

discharge The 3 DWFs which were and analyzed for illicit criteria as highly suspicious to be an illicit accessibility permits discharge were sampled along with 2 other outfalls identified by the Town The Town cleans all catch basins for sampling using in-house forces and the trained

operator will continue to monitor for Furthermore the outfalls marked as illicit connections as he cleans catch Medium Suspicion were inspected basins as this is our first line of during the summer of2010 and inspection for illicit discharges samples were taken to the laboratory for testing The Town will continue to send

pertinent staff and managers to The outfall sampling analysis did not NMCOG sponsored training for reveal any conclusive indication ofan Illicit Discharge Detection and illicit connection at neither High Elimination Suspicion nor Medium Suspicion Areas A suspected lllicit Discharge was

found at 5 Fiorenza Dr but after a The Town has not had to issue any series of testing was detennined to violations to the Illicit Discharge be groundwater infiltration Bylaw this reporting period

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BMP BMP Responsible Measurable Goal(s) Progress on Goal(s) shy Planned Activities shy10 Description DeptPerson Permit Year 12 Permit Year 13

Name 3-3 Conduct DPW See BMP 1-1 and BMP 6-1 See BMP 1-1 BMP 3-2 and BMP 6-1 See BMP 1-1 BMP 3-2 and BMP 6shy

Illicit I Discharge Automated Trash Public Outreach booklet

Education distributed to Wilmington Residents by mail

Program last pages include 2 full pages ofstormwater management efforts including IO ways to prevent nonpoint source pollution and also education on Illicit Discharges

3-4 Proposed DPW The draft bylaw will be ln order to allow this by-law to advance the Town The Town will continue to monitor by-law to prohibit illicit discharges and illegal connections

developed by the end of Year 2 of the pennit period and the final bylaw will be prepared by the end ofYear 3 The bylaw will be presented to Town Meeting

has determined that a comprehensive by-law addressing all facets ofthe NPDES permit requirements was not feasible and has generated separate by-laws to address respective minimum control measures The Draft by-law to prohibit illicit discharges and illegal connections was developed and presented as an article on the Town

the effectiveness of the newly amended Health Regulation regarding Jllicit Discharges and the Town s lllicit Discharge Bylaw

The Town will continue to attempt to in Year 4 lf it is not Warrant for the May 2007 Town Meeting The byshy identify illicit connections during approved it will be revised law passed at Town Meeting in May of 2007 catch basin cleaning activities ifappropr iate and presented to Town Meetings in Year 5 The Wilmington Health Department has amended

their environmental regulations to include a specific illicit discharge regulation which includes a $300 per day fine A copy ofthe Health Depaitment Regulation was included in Year Ss annual report

The Town has instructed their catch basin cleaner to inspect structures and identify an illicit connections or dry weather flow during catch basin cleaning activities

The Town has standardized the inspection form to include Illicit Discharge Detection and trained pertinent staff for identifying potential illicit connections ai1d discharges

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Program last pages include 2 full pages of stonnwater management efforts including IO ways to prevent nonpoint source pollution and also education on Illicit Discharges

3-5 Enforce DPW The draft changes to regulations The Town will continue to investigate the See BMP 3-4 above illicit and policies will be developed potential DWF in upstream manholes in order

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discharges and illegal connections By-law

by the end ofYear 2 of the pennit period The final changes will be prepared by the end of Year 3 Adoption of the new regulations and policies

to trace the ill icit discharges to the sources This will be done in response to complaints as well as being pro-active relying on inspections by our Town catch basin cleaner

will be dependent upon operator

approval of the bylaw Regulations will be proposed See BMP 3-4 above for adoption within one year of approval ofthe bylaw

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4 Construction Site Stormwater Runoff Control

BMP BMP Responsible Measurable Goal(s) Progress on Goal(s) shy Planned Activities shyID Description DeptPerson Permit Year 12 Permit Year 13

Name 4-1 Revise Site Planning Draft changes to the bylaw will be The Stormwater Bylaw was passed at Rule and Regulations governing the

Plan Review developed by the end ofYear 2 of Town Meeting on May 2 2009 Bylaw have been approved through Bylaw the permit period The proposed the Planning Board Planning Board

changes will be presented to Town sessions have included public Meeting in Year 4 If they are not outreach for the new Rules and approved they will be revised if Regulations to the public and to area

- - appropriate and presented to Town developers Meeting in Year 5

4-2 Improve Site DPW The revised process will be A site plan review checklist has been The Town will continue to utilize the Plan Review developed with departments developed and was presented in Year checklist Process involved in the Construction Site Ss annual report A similar checklist

Plan Review Process A checklist has been incorporated into the cun-ent or similar tracking tool will be site plan review process developed during the first year of the permitting period This tool will A Stormwater Checklist has been be adopted during the second year created and is used in Stormwater of the permitting period and Permitting to assure adherence to the employed as described thereafter Bylaw The checklist is available

online at the DPWs website and the Planning Conservation website

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BMP BMP Responsible Measurable Goal(s) Progress on Goal(s) shy Planned Activities -ID Description DeptPerson Permit Year 12 Permit Year 13

Name 4-3 Develop Planning This program will be developed The CWRMPs local media publicity The local media publicity and public

Procedures for with departments involved in the and public meetings have helped to hearings pertaining to the CWRMP receipt and Construction Site Plan Review provide the public with a public input and the Drainage System Master Plan consideration Process The review ofexisting forum Furthennore the Town has will continue to provide an of information procedures will be completed by received a grant from EPA through the infonnational forum for the residents submitted by the end ofYear 2 lfrevisions to Department ofConservation and of the Town of Wilmington the public the procedures are deemed Recreation for an LID techniques

necessary they will be drafted by demonstration project at Silver Lake Furthennore the Silver Lake LID the end ofYear 3 and adopted Several public hearings have been held project includes a public outreach during Year 4 at Wilmington Town Hall to publicize program that will educate the public

this innovative project on why and how the LID techniques - were chosen

Meetings include the televised presentation to the Board ofSelectmen The Town continues to use the Town Conservation Hearings and several website and the Town Topics lnfonnational Meetings for the quarterly newsletter to provide abutting residents education and promote public

programs Additionally the local The DPW dedicated phone nwuber and newspaper the Town Crier will be email address is advertised on the Town used to advertise Hazardous Waste website to be contacted for stormwater Days questions

See also BMPs 1-1 and 2-1 4-4 Develop site DPW The program will be developed by See BMP 3-4 above Current The Engineering Division and

inspection and the end ofYear 2 and will be inspection and enforcement control Conservation Commission will enforcement of implemented in Years 3 4 and 5 measures are being exercised by the continue with their inspections as control Engineering Division the Health required and as needed measures Department and the Conservation program Commission

There is now a permitting process to connect sump pumps and other non-illicit connections to the MS4

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5 Post-Construction Stormwater Management in New Development and Redevelopment

BMP ID

BMP Description



Planned Activities shyPermit Yearl3

5-1

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Develop Post-construction runoff bylaw regulations and guidance

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Planning A draft ofthe post-construction runoff bylaw will be completed by the end of Year 2 The final bylaw will be developed for inclusion on the Town Meeting warrant for Year 3 If the mticle does not pass it will be revised as appropriate and presented at Town Meeting in Years 4 and 5 The associated regulations and guidance will be developed in Year 3 If and when the bylaw is approved a public meeting will be held to solicit input from municipal departments and the public on the regulations and guidance If necessary the regulations and guidance will be modified and they will be presented for a vote at a public hearing ofthe Planning Board

See BMP 3-4 and 4-1 above Post-construction runoff is covered in the Sto1mwater Bylaw and was passed on May 2 2009

Members ofthe Planning and Conservation Commission the Engineering Division and the Department of Public Works will work with the new Bylaw and the requirements of the Rules and Regulations ofthe Bylaw

5-2 Develop Postshyconstruc6on monitoring program

Planning The post-construction monitoring program will be developed during Years 3 and 4 and implemented in Year 5 provided the bylaw is approved by Town Meeting

Efforts include inspections on an as-needed basis and the involvement of enforcement power ofthe Health Department and Conservation Dept

The post-construction monitoring program will continue to be implemented through the Towns Stormwater Bylaw

5-3 Ensure adequate long-term operation and maintenance ofBMPs

DPW A draft procedure for evaluation of BMPs for operation and maintenance issues will be developed by the end ofYear 2 ofthe permitting period and the final procedure will be prepared by the end ofYear 3 This effort will be coordinated with the revisions to the procedure for j oint boards review ofconstruction projects During Year 2 the DPW and Planning Board will investigate potential funding mechanisms develop a draft warrant article and hold a public meeting to solicit input from the community During Year 3 the draft a11icle will be revised if necessary and presented to Town Meeting If it is not approved it will be revised if appropriate and presented to Town Meeting in Years 4 and 5 ifnecessary

See BMP 3-4 above

The Drainage System Master Plan includes long term operation and maintenance recommendations based on inspections within the high and medium priority areas Recommendations include catch basin cleaning street sweeping periodic inspections and targeted maintenance at outfalls detention basins and culverts This past reporting year close to I 00 of Town catch basins were cleaned and this was done internally by in-house forces

The Department ofPublic Works will continue with on-going maintenance procedures utilizing the Towns catch basin cleaner vehicle vacuum street sweeper and vactor truck as well as the efforts ofthe Towns part time summer help stream team which is used to clean out prioritized culverts and drainage ways

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6 Pollution Prevention and Good Housekeeping in Municipal Operations

BMP BMP Responsible Measurable Goal(s) Progress on Goal(s) shy Planned Activities -ID Description DeptPerson Permit Year J2 Permit Year 13

Name 6-1 Educate DPW General stormwater training Ongoing DPW staff training has taken Education efforts will continue

Municipal sessions will be held by the place throughout the permit period throughout the pennit period Employees Department ofPublic Works on an including discussions on old and new

annual basis The goal will be for erosion control effo11s and reporting Consideration for a new educational 90 ofmunicipal employees with suspicious connections with the Towns framework will be given during storm water management catch basin cleaning truck operator development ofthe new five-year

-- -middotresponsibilities to attend at least one session over the permit period In-field training is also being performed

program once requirements are released

Department specific training as more and more infiltration and sessions will be held annually with treatment chambers are being installed a goal of 50 ofpersonnel by in-house forces for Town drainage responsible for storm water projects management attending 90 ofthe sessions Town staffand managers have been

active participants in the training programs offered through the collaborative

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Name Develop and DPW The Municipal Operation and The Town owns one vacuum street The DPW will continue to hire adhere to Maintenance Schedule will be sweeper and a mechanical sweeper summer employees to perform operation and created and implemented within This additional equipment has enabled stream-cleaning activities and will maintenance the first two years ofthe permit the Town to increase its street sweeping continue to provide regular street schedule period and catch basin cleaning schedule and sweeping and cleaning operations

helps the Town achieve spring cleaning throughout the Town by the end ofMay Each catch basin in Wilmington is cleaned at least every The Town will continue to use their three years and high-load areas are in-house catch basin cleaning truck cleaned multiple times every year The vactor truck and vacuum street Town did well again this reporting year sweeper which will be used to clean as nearly every catch basin in Town was underground infiltration chambers middotshycleaned at least once and help blow out existing storm

drainsThe Town of Wilmington is part ofthe Mosquito Control Project which performs routine stream maintenance throughout the year Furthermore a summer crew was hired last year to perfonn stream cleaning activities throughout the Town

The Town is also making great use of the relatively new vacuum street sweeper and vactor truck Acquisition ofthese pieces ofequipment have helped to further adhere to seasonal cleanups and thus reduction ofTSS from stonnwater

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7 BMPs for Meeting Total Maximum Daily Load (fMDL) Waste Load Allocations (WLA) ltltifapplicablegtgt

BMP BMP Description Responsible Measurable Goal(s) Progress on Goal(s) shy Planned Activities shyID DeptPerson Permit Year J1 Permit Year I 2

Name 1-1 Educational Material DPW See BMP 1-1 See BMP 1-1 See BMP 1-1

3shy Conduct Illicit DPW See BMP 3-4 See BMP 3-4 See BMP 3-4 345 Discharge Education

Program Propose amp Enforce lllicit Discharge Bv-Law

5shy Develop Post- DPW See BMP 5-1 See BMP 5-1 See BMP 5-1 123 Construction Runoff -- By-Laiv Regulations-amp

Guidance Develop Post-Construction Monitoring Program amp Ensure Long-Tenn OampM ofBMPs

7b WLA Assessment

A relatively small portion of Wilmington lies within the Shawsheen River basin for which the TMDL has been developed The majority of the Stormwater Drainage System has already been mapped within the Shawsheen River Basin and GIS locations for all known Town outfalls have been obtained during the development of the Towns Comprehensive Water Resource Management Plan (CWRMP) by SEA Consultants Kleinfelder The recommendations of the Drainage Master Plan target high priority areas in conjw1ction with standards of the Massachusetts Stormwater Management Guidelines

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Part IV Summary of Information Collected and Analyzed

As presented in BMP ID3-1 of this repo1t approximately 100 of the MS4 for the Town of Wilmington has been mapped and labeled for pipe material size and approximate age of the sub-system In conjunction with the Drainage System Master Plan potential illicit discharges discovered as a result of outfall inspections have been ranked in tenns ofdegree ofsuspicion Water quality testing has been performed on outfalls indicated in the above report and does not conclusively indicate illicit connections Follow up inspections and testing of potential illicit discharges is recommended under the Drainage System Master Plan Copies ofoutfall inspection reports and data collected to date can be provided upon request

hrLV Program Outputs amp Accomplishments (OPTIONAL)

Programmatic

Stormwater management position created I staffed (yin) No Annual program budget I expenditures ($)

Education Involvement and Training

Estimated number ofresidents reached by education program(s) (or) 95 Stormwater management committee established (yin) Yes Stream teams established or supported ( or yin) Yes Shoreline clean-up participation or quanfay ofshoreline miles cleaned (yin or mi) NIA Household Hazardous Waste Collection Days

Days sponsored bull () 1

bull Community Participation () Unknown bull Material Collected (tons or gal) 177 carloads

105 half load 93 Y-i loads

School curricula implemented (yin) No

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Construction

Number of construction starts (gtI-acre) () I Estimated percentage of construction sta11s adequately regulated for erosion and sediment control () 100 Site inspections completed ( or) 100 Tickets Stop work orders issued (or) 0 Fines Collected ( and$) 0 Complaints concerns received from public () 2

Post-Development Stormwater Management

Estimated percentage ofdevelopment redevelopment projects adequately regulated for post-I-construction stormwater control

() 80

Site Inspections Completed ( or ) 100 Estimated volume ofstormwater recharged (gpy) 30000 gpy est

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Operations and Maintenance

Average frequency ofcatch basin cleaning (non-commercial non-arterial streets) (timesvr) I (100) Average frequency ofcatch basin cleaning (commercial arterial or other critical streets) (timesyr) 1 Total number of structures cleaned () 3600 Storm drain cleaned (LF or mi) 800 LF Qty of screenings debris removed from stonn sewer infrastructure (lbs or tons) 600 tons Disposal or use of sweepings (landfill POTW compost recycle for sand beneficial us etc) Out ofTown

Landfill Mix with compost and street sweepings

Cost of screenings disposal ($)

Average frequency of street sweeping (non-commercial non-arterial streets) (times yr) 15 Average frequency of street sweeping ( commercial arterial or other critical streets) (times I yr) I Qty of sand debris collected bv sweeping (lbs or tons) 522 tons Disposal of sweepings (landfill POTW compost beneficial use etc) (location) Mix residuals

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Cost of sweepings disposal ($) Vacuum street sweepers purchased I leased () 1 (owned)

Vacuum street sweepers specified in contracts (yn) No Reduction in application on public land of (NIA - never used 100 elimination)

bull Fertilizers (lbs or) 0

bull bull

Herbicides (lbs or) 50 Pesticides (lbs or ) 60

Anti-lDe-Jcing products and ratios NaCl 85 CaCh MgCh CMA

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Kac KC Sand 0

Pre-wetting techniques utilized (yin) Yes Manual control spreaders used (yin) No Automatic or Zero-Velocity spreaders used (yin) Yes Estimated net reduction in typical year salt application Obs or ) 10 Salt pile(s) covered in storage shed(s) (yin) Yes Storage shed(s) in design or under construction (yin) NIA

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PART II SELF-ASSESSMENT

The Town of Wilmington has completed the required self assessment and has determined that we are in compliance with all this years permit conditions with the exception ofsome areas which will require greater emphasis during next years permit period

Part 2-2 Due to budgetary constraints the Town has not been able to fund two (2) Household Hazardous Waste Collection Days The Town has held one (1 ) Hazardous Waste Day during the reporting period As a compromise the Town has reviewed alternatives and offers a relatively extensive recycling program Mercury devices are collected 5 days a week year round while white goods and Cathode Ray Tubes (CRTs) are collected by a private recycle company once a week The DPW accepts waste oil from Wilmington Residents year round Monday through Friday The Towns solid waste hauler Northside Carting also operates a small hazardous waste facility and has offered use to Wilmington residents at a discount rate This facility operates year row1d and accepts common hazardous waste items such as oil based paints fluorescent bulbs auto I boat batteries propane tanks and miscellaneous electronic equipment

Part 3-(1-3) Nearly 100 of the Town s MS4 has been mapped and hand superimposed onto the Towns topographic map system (including pipe materials sizes and flow direction) During the overall permit period the Town has procured the services of SEA Consultants through an advertised procurement process to develop a complete Drainage System Master Plan which included the GPS mapping of the Towns drainage system The majority ofthe Towns drainage outfalls were located during the development ofthe Drainage System Master Plan as part ofoutfall assessments which included water quality testing of outfall discharges Although high and medium suspicion flows have been sampled and analyzed low suspicion dry weather flows have not yet been analyzed due to testing budget constraints personnel constraints and poor accessibility (it shall be noted that low suspicion outfalls were identified as outfalls that were blocked or inaccessible and therefore flagged for follow-up) To enhance the towns ability to maintain its drainage system and assist DPW field operations the towns existing GIS and field data was migrated into an on line mapping system Previously the town employed a desktop mapping solution that had been in use since the initial GPS locating and inspection of drainage features in 2007 This on-line system allows field crews to quickly identify drainage structures views detailed cleaning histories and record any cleaning or maintenance performed at that time The on-line system includes PeopleForms which standardized an inspection form for catch basin cleaning These forms include line items for illicit discharge detection and allow operations managers the ability to track cleaning crews identify areas of greatest need of maintenance and monitor connectivity and flow throughout the system Additional programs that are not listed as requirements in our Stormwater Management Pernut have been active this past reporting year Crews from the Massachusetts Mosquito Control Project continue to perform outfall cleaning and maintenance (plus removal of vegetative debris and trash) to reduce the amounts of standing water thus improving water quality Public outreach and education has also continued this repmting year As reported last year the Towns Community Development Technical Review Tean1 held a meeting that focused on potential improvements to the Towns Stormwater Management Bylaw The meeting promoted a collaborative effort between Town Officials and local developers to review potential modifications while maintaining the spirit of the bylaw These changes have been included as an article on the warrant for this years Annual Town Meeting (April 30 2016) As mentioned in previous reports in November of 20 13 Selectmen voted to join a stormwater collaborative via the Northern Mddlesex Council of Governments (NMCOG) Town staff and managers have been active participants in the training programs offered through the collaborative including Illicit Discharge Detection and Elimination public service announcements and review ofthe draft EPA Massachusetts Small MS4 General Permit

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8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18


Measurable Goal(s)















shy shy

3


BMP ID

BMP Description










4







-middot - shy








shy

5


BMPDescription




3-1

--








map




6










shy shy

7














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18


BMP ID

BMP Description










4







-middot - shy








shy

5


BMPDescription




3-1

--








map




6










shy shy

7














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18







-middot - shy








shy

5


BMPDescription




3-1

--








map




6










shy shy

7














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18


BMPDescription




3-1

--








map




6










shy shy

7














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18










shy shy

7














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18














8







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18







middot--






shy shy

9










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18










10

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18

-











11


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18


BMP ID

BMP Description




5-1

-- -


-










See BMP 3-4 above



12










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18










13

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18

--

6-2






14

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18

-








7b WLA Assessment


15




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18




Programmatic








16

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18

Construction




() 80


+shy






17




bull bull



15

Kac KC Sand 0


18




bull bull



15

Kac KC Sand 0


18

wilmington, ma | 2016 annual report | npdes phase ii small

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